PSS ID Number: Q170086Article last modified on 02-25-1999 winnt:4.0 winnt ======================================================================-------------------------------------------------------------------------------The information in this article applies to: - Microsoft Windows NT Server version 4.0 - Microsoft Windows NT Workstation version 4.0 ------------------------------------------------------------------------------- SYMPTOMS======== When you log in to Windows NT 4.0, a Windows NT Explorer window may opendisplaying the contents of the System32 folder. CAUSE===== This behavior can occur if a null, incomplete, or damaged entry exists in theregistry. RESOLUTION========== WARNING: Using Registry Editor incorrectly can cause serious, system-wideproblems that may require you to reinstall Windows NT to correct them. Microsoftcannot guarantee that any problems resulting from the use of Registry Editor canbe solved. Use this tool at your own risk. Use Registry Editor to view the following two Windows NT registry keys: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run Verify that all the values in these keys do not contain any incorrect,incomplete, or null entries (such as ""). MORE INFORMATION================ An incorrect entry in the following registry value has been confirmed to causethe behavior described above: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Value: ActiveMovie File Extensions Value Type: REG_SZ Value Data: ActMovie.exe /Check If the value data for this entry is null or appears in Registry Editor asquotation marks, you may experience the problem described above. To correct theproblem, change the value data to match the entry above or delete theActiveMovie File Extensions value. The Reminder value with "" next to it in theHKEY_CURRENT_USER\Software\Microsoft\Windows\Current Version\Run registry key isalso known to cause this behavior. Deleting the Remainder value resolves thebehavior. If you are uncertain whether an entry is incorrect or incomplete, you may want todelete all entries other than the default Windows NT entry. The following entryto run the System Tray is the only required Windows NT default entry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Value: SystemTray Value Type: REG_SZ Value Data: SysTray.exe For additional information on this issue, please see the following article in theMicrosoft Knowledge Base: Q177510 System32 Folder Opens When Windows Starts Additional query words: service pack sp3 blank login start startup automatic automatically ======================================================================Keywords : kbenv kbui ntregistry NTSrvWkst ntui Version : winnt:4.0Platform : winnt=============================================================================Copyright Microsoft Corporation 1999.